Respuesta :

8555cashio
-20a^2b^2

-20a to the second power and b to the second power in case you did not know what the ^ Meant

Answer:

-20a^2b^2

Step-by-step explanation:

4ab * -5ab  we see the qu asks to multiply a negative with a positive

so we automatically know it will be a negative. and we know monomials become squared.

4 x -5 = -20  

ab x ab = a^2 b^2

As a full sum.

4ab * -5ab = -20a^2 b^2